Streets TIGER 2015

Abstract

The Streets TIGER 2015 data set represents street centerlines acquired from the US Census Bureau.
The TIGER acronym stands for Topologically Integrated Geographic Encoding and Referencing.

Purpose

Street centerlines are widely used as a reference layer. The Census Bureau also uses the streets layer for delineating census blocks,
and geocoding.

Time Period of Content

2015

Update Frequency

annual

Publish Date

2/2015

Originator

US Census Bureau

Publisher

US Census Bureau

Theme Keywords

street, highway

Place Keywords

Florida

Source Scale

Varies: 1:12,000 to 1:100,000

Horizontal Accuracy

Varies: The Census Bureau does accuracy tests using high-precision GPS at street intersections and documents
errors per county. Not all streets have been re-aligned. Estimated accuracy range for re-aligned streets is +/- 23 to +/- 40 feet.
Streets that have not been re-aligned can be over 300 feet off. Rural areas are more likely to be less accurate than urban areas.

Comments

The Census Bureau dramatically improved the spatial and attribute quality of the streets data and other databases during the period from 2002 to 2008.
Several private contractors were hired to do bulk editing using recent aerials and recent county government files.
Census workers walked virtually every street in the US to accurately map addresses and this information was also incorporated into the streets layer.
Not all problems were fixed during this time frame, and work is still on-going on a smaller scale. The Census Bureau currently releases annual data updates
that includes all improvements made in the previous year.